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Patents for Robert G. Henry
Patents 1 - 6 of 6
First set of recordsLast set of records
NumberDatePatenteeTitleType
278,225May 22, 1883R. Crittenden, R.G. HenryCaliperscalipers
795,123Jul. 18, 1905R.G. Henry, D.M. WrightDrill-spindledrill presses
805,546Nov. 28, 1905R.G. Henry, D.M. WrightDrill-spindle-driving mechanismdrill presses
825,273Jul. 03, 1906R.G. HenryFeed mechanism for drill-spindlesdrill presses
928,489Jul. 20, 1909W.G. Allen, R.G. HenryScrew-thread-cutting mechanismscrew machines
1,073,683Sep. 23, 1913W.J. Bayrer, R.G. HenryBelt-shiftermetalworking power transmission
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